openstack/net-virt-providers/src/main/java/org/opendaylight/ovsdb/openstack/netvirt/providers/openflow13/PipelineOrchestratorImpl.java

   1 /*
   2  * Copyright (c) 2014, 2015 Red Hat, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.ovsdb.openstack.netvirt.providers.openflow13;
  10
  11 import java.util.List;
  12 import java.util.Map;
  13 import java.util.concurrent.BlockingQueue;
  14 import java.util.concurrent.ExecutorService;
  15 import java.util.concurrent.Executors;
  16 import java.util.concurrent.LinkedBlockingQueue;
  17
  18 import org.opendaylight.ovsdb.openstack.netvirt.api.Action;
  19 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheListener;
  20 import org.opendaylight.ovsdb.openstack.netvirt.api.NodeCacheManager;
  21 import org.opendaylight.ovsdb.openstack.netvirt.api.Southbound;
  22 import org.opendaylight.ovsdb.openstack.netvirt.providers.ConfigInterface;
  23 import org.opendaylight.ovsdb.utils.servicehelper.ServiceHelper;
  24 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  25 import org.osgi.framework.BundleContext;
  26 import org.osgi.framework.ServiceReference;
  27 import org.slf4j.Logger;
  28 import org.slf4j.LoggerFactory;
  29
  30 import com.google.common.collect.Lists;
  31 import com.google.common.collect.Maps;
  32
  33 public class PipelineOrchestratorImpl implements ConfigInterface, NodeCacheListener, PipelineOrchestrator {
  34     private static final Logger LOG = LoggerFactory.getLogger(PipelineOrchestratorImpl.class);
  35     private List<Service> staticPipeline = Lists.newArrayList(
  36             Service.CLASSIFIER,
  37             Service.ARP_RESPONDER,
  38             Service.INBOUND_NAT,
  39             Service.EGRESS_ACL,
  40             Service.LOAD_BALANCER,
  41             Service.ROUTING,
  42             Service.L3_FORWARDING,
  43             Service.L2_REWRITE,
  44             Service.INGRESS_ACL,
  45             Service.OUTBOUND_NAT,
  46             Service.L2_FORWARDING
  47     );
  48     Map<Service, AbstractServiceInstance> serviceRegistry = Maps.newConcurrentMap();
  49     private volatile BlockingQueue<Node> queue;
  50     private ExecutorService eventHandler;
  51     private Southbound southbound;
  52
  53     public PipelineOrchestratorImpl() {
  54         eventHandler = Executors.newSingleThreadExecutor();
  55         this.queue = new LinkedBlockingQueue<>();
  56         LOG.info("PipelineOrchestratorImpl constructor");
  57         start();
  58     }
  59
  60     public void registerService(final ServiceReference ref, AbstractServiceInstance serviceInstance){
  61         Service service = (Service)ref.getProperty(AbstractServiceInstance.SERVICE_PROPERTY);
  62         LOG.info("registerService {} - {}", serviceInstance, service);
  63         serviceRegistry.put(service, serviceInstance);
  64     }
  65
  66     public void unregisterService(final ServiceReference ref) {
  67         serviceRegistry.remove(ref.getProperty(AbstractServiceInstance.SERVICE_PROPERTY));
  68     }
  69     @Override
  70     public Service getNextServiceInPipeline(Service service) {
  71         int index = staticPipeline.indexOf(service);
  72         if (index >= staticPipeline.size() - 1) {
  73             return null;
  74         }
  75         return staticPipeline.get(index + 1);
  76     }
  77
  78     @Override
  79     public AbstractServiceInstance getServiceInstance(Service service) {
  80         if (service == null) {
  81             return null;
  82         }
  83         return serviceRegistry.get(service);
  84     }
  85
  86     public final void start() {
  87         eventHandler.submit(new Runnable()  {
  88             @Override
  89             public void run() {
  90                 try {
  91                     while (true) {
  92                         Node node = queue.take();
  93                         LOG.info(">>>>> dequeue: {}", node);
  94                         for (Service service : staticPipeline) {
  95                             AbstractServiceInstance serviceInstance = getServiceInstance(service);
  96                             if (serviceInstance != null && southbound.getBridge(node) != null) {
  97                                 serviceInstance.programDefaultPipelineRule(node);
  98                             }
  99                         }
 100                     }
 101                 } catch (Exception e) {
 102                     LOG.warn("Processing interrupted, terminating ", e);
 103                 }
 104
 105                 while (!queue.isEmpty()) {
 106                     queue.poll();
 107                 }
 108                 queue = null;
 109             }
 110         });
 111     }
 112
 113     public void stop() {
 114         queue.clear();
 115         eventHandler.shutdownNow();
 116     }
 117
 118     @Override
 119     public void enqueue(Node node) {
 120         LOG.info(">>>>> enqueue: {}", node);
 121         try {
 122             queue.put(node);
 123         } catch (InterruptedException e) {
 124             LOG.warn("Failed to enqueue operation {}", node, e);
 125         }
 126     }
 127
 128     @Override
 129     public void notifyNode(Node node, Action action) {
 130         if (action == Action.ADD) {
 131             enqueue(node);
 132         } else {
 133             LOG.info("update ignored: {}", node);
 134         }
 135     }
 136
 137     @Override
 138     public void setDependencies(BundleContext bundleContext, ServiceReference serviceReference) {
 139         NodeCacheManager nodeCacheManager =
 140                 (NodeCacheManager) ServiceHelper.getGlobalInstance(NodeCacheManager.class, this);
 141         nodeCacheManager.cacheListenerAdded(
 142                 bundleContext.getServiceReference(PipelineOrchestrator.class.getName()), this);
 143         southbound =
 144                 (Southbound) ServiceHelper.getGlobalInstance(Southbound.class, this);
 145     }
 146
 147     @Override
 148     public void setDependencies(Object impl) {}
 149 }